The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2009
Filed:
Apr. 06, 2006
Syuji Kubota, Tokyo, JP;
Mayuko Ueno, Chiba, JP;
Syuji Kubota, Tokyo, JP;
Mayuko Ueno, Chiba, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A DSSS and OFDM two-way waiting reception method is disclosed. The reception method includes the steps of (a) maintaining a two-way waiting state if none of an RSSI trigger, an OFDM search trigger, and a DSSS search trigger is generated; (b) switching to an RSSI-activated OFDM reception state if the RSSI trigger is generated in the two-way waiting state; (c) switching to a DSSS reception state if an OFDM synchronization loss trigger is generated in the RSSI-activated OFDM reception state; (d) switching to an OFDM search-activated OFDM reception state if the OFDM search trigger is generated in the two-way waiting state; (e) switching to the DSSS reception state if the DSSS search trigger is generated and the OFDM synchronization loss trigger is generated in the OFDM search-activated OFDM reception state; and (f) switching to the DSSS reception state if the DSSS search trigger is generated in the two-way waiting state.